sperata acicularis

For one thing, most reports on this fish are false. They do not have slow growth. Today, 18 days they went from 5" to 6.5"-ish (I don't have the guts to take out the fish out of water to record any precise measurements but seems close to the one I give). Estimated growth, 2" a month. That's...

Came in as Burmese Shovelnose Catfish. Is it really Sperata? About 4$. Or is it some mystus or hemibagrus.